<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Nov 2, 2020, at 3:21 PM, Roman Sowa <<a href="mailto:modular@go2.pl" class="">modular@go2.pl</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">I have observed this in new parts also. </div></div></blockquote><br class=""></div><div>I just remembered that I had two SN76477s back in the day. One of them had this "tarnish" on it. One was from Radio Shack, the other I can't recall. It's a TI part, of course.</div><div><br class=""></div><div><br class=""></div><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Terry Bowman, KA4HJH<br class="">"The Mac Doctor"<br class=""><br class=""><a href="https://www.astarcloseup.com/" class="">https://www.astarcloseup.com/</a><br class=""><br class="">"Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact."—Carl Sagan, <i class="">Psychology Today</i>, 1996</div>
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